Question

2- Convert into mole-
(a)- 32 g of Oxygen gas.
(b)- 90 g of Water
(C) – 22 g of Carbon Dioxide​

Answer 1

Answer:

below

Explanation:

a.

Moles =given mass/molar mass

moles=-32/16

moles=-2

b.

Moles=-90/18

Moles=-5

c.

Moles=-22/44

Moles=-0.5

Answer 2

Answer:

a) mole = given mass / molar mass

= 32 / 32

=1 mol

Explanation:

a) given mass is 32 gram

molar mass of oxygen equal to 32(2×16) because mass of oxygen is 16

hence, mole equal to given mass / molar mass

= 32 /32

=1 mole